public class InMemoryTileCache extends java.lang.Object implements TileCache
Constructor and Description |
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InMemoryTileCache(int capacity) |
Modifier and Type | Method and Description |
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void |
addObserver(Observer observer) |
boolean |
containsKey(Job key) |
void |
destroy()
Destroys this cache.
|
org.mapsforge.core.graphics.TileBitmap |
get(Job key) |
int |
getCapacity() |
int |
getCapacityFirstLevel() |
org.mapsforge.core.graphics.TileBitmap |
getImmediately(Job key)
Returns tileBitmap only if available at fastest cache in case of multi-layered cache, null otherwise.
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void |
purge()
Purges this cache.
|
void |
put(Job key,
org.mapsforge.core.graphics.TileBitmap bitmap) |
void |
removeObserver(Observer observer) |
void |
setCapacity(int capacity)
Sets the new size of this cache.
|
void |
setWorkingSet(java.util.Set<Job> jobs)
Reserves a working set in this cache, for multi-level caches this means bringing the elements in workingSet into
the fastest cache.
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public InMemoryTileCache(int capacity)
capacity
- the maximum number of entries in this cache.java.lang.IllegalArgumentException
- if the capacity is negative.public boolean containsKey(Job key)
containsKey
in interface TileCache
Map.containsKey(java.lang.Object)
public void destroy()
TileCache
TileCache.purge()
should be used for this purpose. The earlier practice is now discouraged and may lead to
unexpected results when used with features introduced in 0.5.1 or later.public org.mapsforge.core.graphics.TileBitmap get(Job key)
public int getCapacity()
getCapacity
in interface TileCache
public int getCapacityFirstLevel()
getCapacityFirstLevel
in interface TileCache
public org.mapsforge.core.graphics.TileBitmap getImmediately(Job key)
TileCache
getImmediately
in interface TileCache
public void purge()
TileCache
TileCache.get(Job)
issued after purging will not return any tiles added before the purge operation.
Applications should purge the tile cache when map model parameters change, such as the render style for locally
rendered tiles, or the source for downloaded tiles. Applications which frequently alternate between a limited
number of map model configurations may want to consider using a different cache for each.public void put(Job key, org.mapsforge.core.graphics.TileBitmap bitmap)
public void setCapacity(int capacity)
capacity
- the new maximum number of entries in this cache.java.lang.IllegalArgumentException
- if the capacity is negative.public void setWorkingSet(java.util.Set<Job> jobs)
TileCache
setWorkingSet
in interface TileCache
public void addObserver(Observer observer)
addObserver
in interface ObservableInterface
public void removeObserver(Observer observer)
removeObserver
in interface ObservableInterface